﻿<p><em>IfcSubContractResource</em> is a construction resource needed in a construction process that represents a sub-contractor. </p> 

<blockquote class="history">
HISTORY&nbsp; New entity in IFC2.0.
</blockquote> 
<blockquote class="change-ifc2x4">
IFC4 CHANGE&nbsp; The attribute <em>SubContractor</em> has been deleted; use <em>IfcRelAssignsToResource</em> to assign an <em>IfcActor</em> to fulfill the role as the subcontractor.  The attribute <em>JobDescription</em> has been deleted; use <em>LongDescription</em> to describe the job.
</blockquote>

<p>An <em>IfcSubContractResource</em> can be used in cost estimating and work planning with or without specifying the subcontractor and contract agreement.</p> 
<p>The purpose of an <em>IfcSubContractResource</em> is to indicate work of a particular type that is that is to be engaged through the use of a sub-contract. Its aim is to identify the description of the sub-contract work required. It can be used to identify the generic type of sub-contract resource that is required for a purpose without having to be specific about the actor (person or organization) providing the resource occurrence. It may be particularly useful when creating an overall plan for a process or processes. For instance, within maintenance or work planning there may be a known task that needs to be done which is planned to require an 'insulation specialist'. </p>
<p>A subcontract resource may be described at various stages and levels of detail through its assignments:</p>
<ul>
<li>Subcontract resource designated for particular tasks</li>
<li>Actors identified to request bids</li>
<li>Cost schedules (bids) received from actors</li>
<li>Project order (work order, change order, etc.) executed</li>
</ul>